Major Functions Body Movement- Contraction of skeletal muscles is responsible for all of the movement in the body. Maintenance of Posture- Skeletal muscles contantly maintain how you can sit up or standing correctly Respiration- Muscels of the throat Production of body Heat- When the skeletal muscles contract and heat is given off as body heat Communication- Skeletal muscles are used for all communication like speaking, writing, typing, and even facial expressions. Constrction of Organs and Vessels- The cntraction of smooth muscles within the walls of internal organs and vessels. This helps propel and mix food and water in digestive track. Heart Beat- the contraction f caridac muscles causes the heart to beat.
Functions and locations of muscles
These cells are pretty big. they have mutlinucli which is perfect for a muscle cell because it makes a lot of protein which a muscle needs to be big and strong. It has a lot of straits which help extend and contract the muscles.
Skeletal
Cell shape- long, clindrical
Nucleus- Multiple
Function- Move the whole body
Control-Voluntary
FunctionLocation
40% of body weight
Contractility- shortens muscle with force,
Excitability- responds to stimuli
Extensibility- Skeletal mucsles can be stretched,
Elasticity- Rcoil to orginal- resting length after stretch.
All muscles in the body
attached to bones
Smooth
Cell- Spindle-shaped
Nucleus- Single
Function- Compression of organs, ducts, tube, etc
Control Involuntary
Cells are small, spidle shaped usualy
Walls of hollow organs blood vessels and glands
Cardiac
Cell- Branched Long Cells, striated branching, Actin myosin Heart
myotilaments
Nucleus- Single, central
Control- Involuntary
Lung cells, striated, branching, Actin and myosin myofilaments
Heart
Tendons and Ligaments
Tendons are attachment points where the muscles are connected to the bone. Liggaments are tough connection tissue to and usually connecting bone to bone.
Bone Marrow
It is the soft tissue in the medullary cavity of the bone
There are two types of Bone Marrow- Yellow bone marrow consists of fat, to be used for energy
Red Bone Marrow has blood forming cells, to produce blood cells.
Osteoarthritis- results from the gradual wear and tear of the cartlidge between the joints that occurs with advancing age. 85% of people over 70 have it. Most commonly in Knees and hips in overweight individuals.
Osteoarthritis
Facts
Over 30 facial muscles
Eye muscles are busiest muscles and move over 100,000 times.
Body Movement- Contraction of skeletal muscles is responsible for all of the movement in the body.
Maintenance of Posture- Skeletal muscles contantly maintain how you can sit up or standing correctly
Respiration- Muscels of the throat
Production of body Heat- When the skeletal muscles contract and heat is given off as body heat
Communication- Skeletal muscles are used for all communication like speaking, writing, typing, and even facial expressions.
Constrction of Organs and Vessels- The cntraction of smooth muscles within the walls of internal organs and vessels. This helps propel and mix food and water in digestive track.
Heart Beat- the contraction f caridac muscles causes the heart to beat.
Functions and locations of muscles
These cells are pretty big. they have mutlinucli which is perfect for a muscle cell because it makes a lot of protein which a muscle needs to be big and strong. It has a lot of straits which help extend and contract the muscles.
Cell shape- long, clindrical
Nucleus- Multiple
Function- Move the whole body
Control-Voluntary
40% of body weight
Contractility- shortens muscle with force,
Excitability- responds to stimuli
Extensibility- Skeletal mucsles can be stretched,
Elasticity- Rcoil to orginal- resting length after stretch.
attached to bones
Cell- Spindle-shaped
Nucleus- Single
Function- Compression of organs, ducts, tube, etc
Control Involuntary
Cell- Branched Long Cells, striated branching, Actin myosin Heart
myotilaments
Nucleus- Single, central
Control- Involuntary
Tendons and Ligaments
Tendons are attachment points where the muscles are connected to the bone. Liggaments are tough connection tissue to and usually connecting bone to bone.
Bone Marrow
It is the soft tissue in the medullary cavity of the bone
There are two types of Bone Marrow- Yellow bone marrow consists of fat, to be used for energy
Red Bone Marrow has blood forming cells, to produce blood cells.
Osteoarthritis- results from the gradual wear and tear of the cartlidge between the joints that occurs with advancing age. 85% of people over 70 have it. Most commonly in Knees and hips in overweight individuals.
Osteoarthritis
Facts